modelformst save

For the life of me I can't figure out how to use a modelformset with class view. I get it to display but it won't save. Also, when it goes into form_invalid, it doesn't display the 3 formsets. Can anyone shed a little light? 

I'm using crispy forms with this in my template:

{% crispy reference_form referencehelper %}

This is my model

class Reference(models.Model):

    ref_name = models.CharField(max_length=256)

    ref_phone = models.CharField(max_length=20, validators=[RegexValidator(regex='\(?([0-9]{3})\)?([ .-]?)([0-9]{3})([ .-]?)([0-9]{4})', message='Looks like your phone number is not formatted correctly', code='Invalid number')])

    ref_email = models.EmailField(max_length=256)

    created_by = models.ForeignKey(User, unique=True)

    applicant = models.ForeignKey("Applicant")

    application = models.ForeignKey("Application")

This is my form.py form

class ReferenceForm(forms.ModelForm):

    class Meta:

        model = Reference

        exclude = ('created_by', 'application', 'applicant')

    def __init__(self, *args, **kwargs):

        super(ReferenceForm, self).__init__(*args, **kwargs)

class ReferenceFormSetHelper(FormHelper):

    def __init__(self, *args, **kwargs):

        super(ReferenceFormSetHelper, self).__init__(*args, **kwargs)

        self.form_method = 'post'

        self.layout = Layout(

            Fieldset('Reference',

            'ref_name',

            'ref_phone',

            'ref_email',

        ))

        self.add_input(Submit("submit", "Save"))

ReferenceFormSet = modelformset_factory(Reference, form=ReferenceForm, extra=3, max_num=3, can_delete=True)

This is my view:

class ReferenceCreate(LoginRequiredMixin, CreateView):

    model = Reference

    form_class = ReferenceForm

    template_name = 'requestform/reference_form.html'

    def dispatch(self, *args, **kwargs):

        return super(ReferenceCreate, self).dispatch(*args, **kwargs)

    def get(self, request, *args, **kwargs):

        """

        Handles GET requests and instantiates blank versions of the form

        and its inline formsets.

        """

        self.object = None

        form_class = self.get_form_class()

        form = self.get_form(form_class)

        reference_form = ReferenceFormSet()

        refhelper = ReferenceFormSetHelper()

        return self.render_to_response(

            self.get_context_data(

                                  reference_form=reference_form,

                                  referencehelper=refhelper

                                  ))

    def form_valid(self, form):

        """

        Called if all forms are valid. Creates a Recipe instance along with

        associated Ingredients and Instructions and then redirects to a

        success page.

        """

        self.object = form.save()

        reference_form.instance = self.object

        reference_form.save()

        return HttpResponseRedirect(reverse('requestform:app_check', kwargs={'app_id': obj.application_id}))

    def form_invalid(self, reference_form):

        refhelper = ReferenceFormSetHelper()

        return self.render_to_response(self.get_context_data(

                                  reference_form=reference_form,

                                  referencehelper=refhelper

                                  ))

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